Fire-extinguisher.



M. N. CONNOR. FIRE EXTINGUISHER. APPLICATION FILED SEPT, so, 1911.

Patented Mar. 2, 1915.

Mmmm.

is a fragm ric.

It w

marca N. comme, or* BUFFarid,iiiiiwdiignhssrenon To FRANK w. man, or BUFFALO, NEW YORK.

l FIRE-EXTINGUISHER.

jlltgggo. Specification of Letters Patent.

Application filed September 30, 1911. Serial No. 652,063.

T0 all whom t may concern.:

Be it known that I, MAURICE N. CONNOR,

a citizen of the United States, residing at Buffalo, in the county of Erie and State of A New York, have invented a new and useful improvement 1n Fire-Extinguishers, of which the following is a specification.

This invention relates to improvements in fire extinguishers of that type'y which are adapted to contain' ja fire extinguishing liquid or gas under high pressure.

The object of this invention is to provide a hre extinguisher 4of this type of simple and economical construction which will be strong and durable and be provided with tight fitting joints so as to prevent the leakage of the material contained therein, and which will have its parts so constructed and arranged that they can not easily become broken or disarranged.

inthe accompanying drawings: Figurel entary sectional elevation of a lire extingulsher embodying the invention. Fig. 2 is a sectional elevation, on an enlarged scale, 'through the head and upper end of the extinguisher. Fig. 8 is a fragmentary longitudinal section, on an enlarged scale, through the joint between the collar of the extinguisher and its head. Fig. i is a fragmentary cross-section in line lf-4, Fig. 2.

Like reference' characters refer to like parts in the several figures.

The fire extinguisher comprises a hollow cylindrical, seamless body portion or casing A of copper or suitable material which is closed at one end by a. bottom a firmly fitted within and soldered to the walls of the casing and at its opposite end has its sides drawn inwardly 'to form a neck ortion a having a central opening in w ich is arranged an annular collar B which fits snugly therein and projects above the neck portion of the casing. v

The collar B is provided at its lower edge with an outwardly extending flange b, the upper face of which conforms in shape with and is adapted to fit snugly against .the under or inner surface ofthe neck portion a around its opening, and the under side of thisv flange has a depressed portion b which is 'adapted to be filled with solder when the collar 1s secured to the casin for sealing the joint between the flange and the casing.

rlFhe collarB isvexternally screwthreaded -above the neck of the casing and is provided Patented Mar.. 2, filo.

with a lock nut C which is adapted to engagethe upper face of the neck portion of the casing and clamp the flange b of the collar firmly against the under side of the neck. This serves to secure the collar firmly to the casing and hold the same in place thereon. After the collar has been thus secured, it is desirable that the fiange of the collar be thoroughly sweated and soldered to the casing. A very tight and secure joint is thus produced and the collar is enabled to withstand severe strains without disturbing or opening the joint between the collar and the casing.

D represents the' head ofthe extinguisher which is provided on its inner or .bottom side with an lannular depending {iange d which 1s adapted to fit over-the collar lB and have threaded engagement therewith for securing the head to the casing. On its inner side, adjacent to and within the flange d, the head D 1s provided with an annular channel d'Y of a width equal to the thickness of the collar..V

B, and this channel is filled with asuitable packing d2 of lead or other packing material. iVhen the head is screwed down firmly j in place on the 'collar B, the upper edge of the collar is forced into this 'packing and forms a tight fitting joint therewith.v The upper edge of the collar lis preferably provided with annular grooves cl3 and the pressure of the collar on the packing forces the latter into these grooves so that a joint is formed through which it is impossible for the gas or liquid of the extinguisher to es- The yhead D is provided with a central valve chamber E which communicates by a passage e with an opening in the under side of the head in which is secured a stand pipe F which is open at its lower end .and extends nearly to the bottom ofthe casing. In the valve chamber E is arranged a valveG for the controiling passage c, the wall of the passage at its yupper end forming a seat for this valve. The valve G has a valve stern g which has screwthreaded engagement' with the head and extends up through an opening g therein, and is provided at its upper end with an annular handle g2 for turning the valve to move it toward and from its seat. Any suitable means may be employed for packing this valve stem to prevent the escape of gas or liquid through the opening in the head 'through whichV the valve stem extends. In the construction shown, the head is provided on its upper face, adjacent to the opening g', with an annular flange H within which is placed a suitable packing z, which surrounds the valve stem and is arranged between packing ringsL. A nut k2, I which has screwthreaded engagement withw the outer face of the f iange H, serves to force the packing firmly against the valve stem and hold itf in place.

The valve Gr and its stem g are provided with a passageway I which extends" from the lower end of the valve to the upper end construction which is y tional joints with their of the stem, where it communicates with a gage or pressure indicator K of suitable secured to the upper end of the valve stem within the valve operating handle g2. The-passageway I affords direct communication between the interior of the casing and the gage so that the latter will always register the pressure of the gas or liquid in the casing. 'By placing this passage withinthe valve itself, the construction is greatly simpliied and the expense thereof considerably reduced. Further, no addinecessary packing are required, as would be the case if a separate connection were provided between the gage and the casing, and this reduces the possibility of leakage from the casing, simplilies the construction and greatly lessens the cost of manufacture, and protects the connection between the gage and the casing. The valvehandle g2 surrounds the gage K and projects a short distance above the same and forms a guard for the gage which prevents the gage from being broken or damaged in handling the extinguisher.

The head D 1s provided with an annular handle L which surrounds the valve handle g2 and projects above the same. The handle L protects the valve handle and forms a base. upon which theextinguisher can rest when invert-ed. The handle can be used in screwing the head in place on the collar B and in moving the extinguisher from place to place. A discharge passage M leads from the valve chamber E to the outer side ofthe head, and a suitable hose or other discharge connection may be secured in the outer end of this passage. The head may also be pro-v vided with a safety device m which is connected by. a passage n with the 'interior of the casing. This device may be of any suitable construction so arranged that when the pressure of the contents of the extingulsher exceeds a certain fixed point, it will -permit the contents to escape and thus prevent undue strain upon the parts of the extinguisher.

In the construction shown, the extinguisher is intended to contain liquid and gas under high pressure but it may be used for either separately, if desired. The number of joints through which a possible leakage may occur is reduced to a minimum and the connections at the joints are so constructed as to possess great strength and rigidity and prevent the seams or joints from tending to open under any strain to which the parts may be subjected. The head is compact and its valve and gage are so protected that there is little their becoming broken or disarranged in handling the extinguisher.

I claim as my invention:

A head structure for fire extinguishers comprising an integral casting having an annular handle projecting therefrom, said head having an opening extending therethrough in an axial direction, with an intermediate lateral discharge, a stand pipe secured in said head at the lower end thereof and in communication with said opening, a valve seat forming a part of said casting and arranged within the opening between the lateral discharge and the stand pipe, a valve coperating with said valve seat, a stem forming a part ofsaid valvie and threaded into the casting above the lateral discharge, said valve and valve stem having a longitudinally disposed opening, a stuiing box connection forming a part of the casting and projecting upward within the handle above the upper part of the casting, a suitable packing gland nut and gland ring eoperating with said stuffing box connection, a. valve handle of cup shape engaging said stem, and a gage connection secured to said stem and holding said valve handle in place, said cup-shaped handle serving to receive the gage.

Witness my hand this 23rd day of Sep- MAURICE N. CONNOR. Witnesses:

E. C. HAND, A. L. MCGEE.

tember, 1911.

danger of p 

